Curiosity killed the cat AND it's a rover. Popular dog name in comics (I've never heard of anyone calling their dog Rover in real life. Fido. That's another one...)

I mean it's looking for life, yeah, all benign and shit, but if it finds any space cats a secret programme dubbed "The fourth law" kicks in and overrides everything else, making its eye-cameras go red (cut to shot of Curiosity's POV going red with grids and the words "4. Must Kill Cats" in green font along the bottom).